Results 71 to 80 of about 830,148 (206)

TagF-mediated repression of bacterial type VI secretion systems involves a direct interaction with the cytoplasmic protein Fha [PDF]

open access: yes, 2018
The bacterial type VI secretion system (T6SS) delivers effectors into eukaryotic host cells or toxins into bacterial competitor for survival and fitness.
Filloux, A   +5 more
core   +1 more source

Plasma membrane association by N-acylation governs PKG function in Toxoplasma gondii [PDF]

open access: yes, 2017
Cyclic GMP (cGMP)-dependent protein kinase (protein kinase G [PKG]) is essential for microneme secretion, motility, invasion, and egress in apicomplexan parasites, However, the separate roles of two isoforms of the kinase that are expressed by some ...
Brown, Kevin M   +2 more
core   +2 more sources

Peripheral and central mechanisms involved in hormonal control of male and female reproduction [PDF]

open access: yes, 2016
Reproduction involves the integration of hormonal signals acting across multiple systems togenerate a synchronized physiological output. A critical component of reproduction is the luteinizinghormone (LH) surge, which is mediated by estradiol (E2) and ...
Bentley, G. E.   +6 more
core   +1 more source

Epithelial organization and cyst lumen expansion require efficient Sec13-Sec31-driven secretion [PDF]

open access: yes, 2012
Epithelial morphogenesis is directed by interactions with the underlying extracellular matrix. Secretion of collagen and other matrix components requires efficient coat complex II (COPII) vesicle formation at the endoplasmic reticulum. Here, we show that
Hodgson, Lorna   +3 more
core   +2 more sources

Functional plasticity of antibacterial EndoU toxins. [PDF]

open access: yes, 2018
Bacteria use several different secretion systems to deliver toxic EndoU ribonucleases into neighboring cells. Here, we present the first structure of a prokaryotic EndoU toxin in complex with its cognate immunity protein.
Eschenfeldt, William H   +11 more
core   +1 more source

Glycemia Regulation: From Feedback Loops to Organizational Closure. [PDF]

open access: yes, 2020
Endocrinologists apply the idea of feedback loops to explain how hormones regulate certain bodily functions such as glucose metabolism. In particular, feedback loops focus on the maintenance of the plasma concentrations of glucose within a narrow range ...
Bich, Leonardo   +2 more
core   +5 more sources

Enhanced at puberty 1 (EAP1) is a new transcriptional regulator of the female neuroendocrine reproductive axis [PDF]

open access: yes, 2007
The initiation of mammalian puberty and the maintenance of female reproductive cycles are events controlled by hypothalamic neurons that secrete the decapeptide gonadotropin-releasing hormone (GnRH).
Sabine Heger   +56 more
core   +1 more source

Ca2+ - Induced Structural Change of Multi-Domain Collagen Binding Segments of Collagenases ColG and ColH from Hathewaya histolytica [PDF]

open access: yes, 2018
Hathewaya histolytica, previously renamed as Clostridium histolyticum, secretes at least two collagenases, ColH and ColG, that allow for degradation of extracellular matrices of animal tissue.
Ruth, Christopher Eric
core   +2 more sources

Arginine at the host-pathogen interface

open access: yesInfection and Immunity
Nutrient availability shapes the course of infection. Arginine, a conditionally essential amino acid, plays a crucial role in both host immune defense and pathogen metabolism. As a precursor for nitric oxide production, arginine supports immune functions
Brooke E. Ryan, Laura A. Mike
doaj   +1 more source

Comparative Genomics of Aeromonas hydrophila Secretion Systems and Mutational Analysis of hcp1 and vgrG1 Genes From T6SS

open access: yesFrontiers in Microbiology, 2019
Virulent Aeromonas hydrophila causes severe motile Aeromonas septicemia in warmwater fishes. In recent years, channel catfish farming in the U.S.A. and carp farming in China have been affected by virulent A.
Hasan C. Tekedar   +5 more
doaj   +1 more source

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